//
//  UIBarButtonItem+Extension.swift
//  sinaWeiBo
//
//  Created by weixq on 15/8/10.
//  Copyright © 2015年 weixq. All rights reserved.
//

import UIKit

extension UIBarButtonItem {

    convenience init(imageName: String, target:AnyObject?, action: String?) {
        let button = UIButton()
        button.setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        button.setImage(UIImage(named: imageName + "_highlighted"), forState: UIControlState.Highlighted)
        button.sizeToFit()
        
        // 设置监听方法
        if let actionName = action {
            button.addTarget(target, action: Selector(actionName), forControlEvents: UIControlEvents.TouchUpInside)
        }
        
        self.init(customView: button)
    }
}
